Table 2.
Numbers in the analysis sample (N = 4,739) with middle-childhood problems, and percentages reporting early sexual behavior
| Type of problem | Problem category | Time 1 (6–8 years) | Time 2 (10–11 years) | ||
|---|---|---|---|---|---|
| N (%) in problem category | % of problem category reporting early sexual behaviora | N in problem category | % of problem category reporting early sexual behaviora | ||
| Hyperactivity/inattentionb | Normal | 3,785 (91.1) | 23.7 | 3,865 (94.6) | 23.1 |
| Abnormal/borderline | 371 (8.9) | 22.0 | 220 (5.4) | 24.3 | |
| Conduct problemsb | Normal | 3,250 (78.2) | 22.5 | 3,524 (86.2) | 22.0 |
| Abnormal/borderline | 908 (21.8) | 27.5 | 564 (13.8) | 30.8 | |
| Peer relationship problemsb | Normal | 3,622 (87.2) | 24.1 | 3,500 (85.5) | 23.7 |
| Abnormal/borderline | 533 (12.8) | 19.9 | 592 (14.5) | 19.9 | |
| Depressive symptomsc | Low | 3,577 (87.5) | 23.3 | 3,418 (84.1) | 22.5 |
| High | 512 (12.5) | 23.6 | 646 (15.9) | 26.5 | |
| School disliked | Low | 3,223 (71.1) | 23.7 | 2,672 (64.1) | 22.3 |
| High | 1,308 (28.9) | 24.0 | 1,498 (35.9) | 26.0 | |
| School performanced | High | 1,822 (45.5) | 24.5 | 2,179 (49.6) | 22.5 |
| Low | 2,182 (54.5) | 24.7 | 2,216 (50.4) | 25.5 | |
aEarly sexual behavior denotes intercourse and/or oral sex in the last year, reported at age 15 clinic interview. Percentages exclude missing information
bCut-offs for abnormal/borderline levels of conduct, hyperactivity/inattention and peer relationship problems were defined using recommended cut-offs for population norms (Goodman 1997)
cHigh levels of depressive symptoms were defined as top 10 % of scores, but percentages exceed 10 % due to tied scores
dDivision into low and high was based on median scores